| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME | 
|---|---|---|---|---|---|
| December 30 2011    | $14.89    | $15.18    | $14.76    | $14.77    | 1,822,300    | 
| December 29 2011    | $14.97    | $15.21    | $14.73    | $14.99    | 1,363,100    | 
| December 28 2011    | $15.87    | $16.03    | $14.85    | $14.93    | 2,597,200    | 
| December 27 2011    | $15.85    | $15.89    | $15.49    | $15.86    | 2,202,800    | 
| December 23 2011    | $15.20    | $15.88    | $15.00    | $15.88    | 1,726,700    | 
| December 22 2011    | $15.17    | $15.26    | $14.86    | $15.16    | 2,028,400    | 
| December 21 2011    | $15.07    | $15.33    | $14.88    | $15.16    | 3,749,300    | 
| December 20 2011    | $14.93    | $15.53    | $14.85    | $15.06    | 2,479,300    | 
| December 19 2011    | $14.92    | $15.03    | $14.52    | $14.55    | 1,804,000    | 
| December 16 2011    | $14.71    | $15.00    | $14.65    | $14.83    | 3,421,300    | 
| December 15 2011    | $14.62    | $14.70    | $14.20    | $14.57    | 1,717,700    | 
| December 14 2011    | $14.90    | $15.15    | $14.27    | $14.39    | 2,844,500    | 
| December 13 2011    | $15.87    | $16.04    | $14.80    | $15.05    | 2,335,400    | 
| December 12 2011    | $15.75    | $15.80    | $15.42    | $15.77    | 1,920,200    | 
| December 09 2011    | $15.44    | $16.19    | $15.25    | $16.03    | 2,023,600    | 
| December 08 2011    | $15.65    | $15.94    | $15.26    | $15.31    | 1,551,000    | 
| December 07 2011    | $15.50    | $16.00    | $15.16    | $15.76    | 3,022,300    | 
| December 06 2011    | $16.29    | $16.29    | $15.39    | $15.41    | 2,549,100    | 
| December 05 2011    | $16.30    | $16.50    | $16.04    | $16.35    | 1,512,900    | 
| December 02 2011    | $15.70    | $15.92    | $15.43    | $15.84    | 1,824,500    | 
| December 01 2011    | $15.51    | $15.93    | $15.39    | $15.44    | 1,924,200    | 
| November 30 2011    | $15.67    | $15.71    | $15.32    | $15.51    | 2,222,500    | 
| November 29 2011    | $16.00    | $16.00    | $14.89    | $15.11    | 2,549,500    | 
| November 28 2011    | $15.17    | $15.72    | $15.06    | $15.72    | 1,986,000    | 
| November 25 2011    | $14.76    | $15.01    | $14.55    | $14.64    | 760,700    |